In the winter and spring alternate seasons, many fruit trees begin to bud and bloom. However, due to the low temperatures during this period, and the newly emerged flower buds have low cold resistance, it is very easy for frozen buds to freeze and directly affect the fruit setting rate.
The following measures can be taken to prevent freezing and freezing of fruit trees:
One is watering. Watering orchards before sprouting can significantly reduce soil temperature and delay the germination of fruit trees. It is also possible to water an orchard after sprouting, which delays the flowering period by 3-5 days.
The second is smoked smoke. Orchard fumigation can reduce the radiation emission of soil heat and effectively increase the temperature in the park. In the cold or frosty morning, ignite cigarettes prepared with straw, weeds, rotten tires, sawdust, etc., generally 4-6 cigarettes should be burned per orchar orchard, and each cigarette should not exceed 1 meter in weight. Less than 20 kg. With fire boring and smolder, it produces dense smoke that fills the entire orchard, thus reducing the freezing damage.
The third is spraying pesticides. Before the budding of the fruit trees, low concentrations of ethephon or naphthalene acetic acid, chlorogenic acid and other aqueous solutions are sprayed on the fruit trees, and foliar fertilizers can also be sprayed to increase tree vigor and resistance, thereby reducing the risk of freezing. Or spray 0.3%-0.6% of potassium dihydrogen phosphate plus 0.5% of white sugar on the flowering fruit trees and spray it 2-3 times.
Fourth, the trunk is painted white. In winter and spring, the fruit tree is painted white with self-contained whitening agent, which can effectively reduce the absorption of solar heat, delay germination and flowering, and prevent cold, freeze, and prevent spawning pests from spawning. The preparation method of whitening agent is: take 5 kg of lime, 0.5 kg of sulfur powder, 1.5 kg of salt, 0.1 kg of vegetable oil, 0.5 kg of flour, and 15 kg of water. In the preparation process, lime and salt are separately heated with hot water, stirred into a paste, then sulfur powder, vegetable oil and flour are added, and finally the water can be used after adding water.
The following measures can be taken to prevent freezing and freezing of fruit trees:
One is watering. Watering orchards before sprouting can significantly reduce soil temperature and delay the germination of fruit trees. It is also possible to water an orchard after sprouting, which delays the flowering period by 3-5 days.
The second is smoked smoke. Orchard fumigation can reduce the radiation emission of soil heat and effectively increase the temperature in the park. In the cold or frosty morning, ignite cigarettes prepared with straw, weeds, rotten tires, sawdust, etc., generally 4-6 cigarettes should be burned per orchar orchard, and each cigarette should not exceed 1 meter in weight. Less than 20 kg. With fire boring and smolder, it produces dense smoke that fills the entire orchard, thus reducing the freezing damage.
The third is spraying pesticides. Before the budding of the fruit trees, low concentrations of ethephon or naphthalene acetic acid, chlorogenic acid and other aqueous solutions are sprayed on the fruit trees, and foliar fertilizers can also be sprayed to increase tree vigor and resistance, thereby reducing the risk of freezing. Or spray 0.3%-0.6% of potassium dihydrogen phosphate plus 0.5% of white sugar on the flowering fruit trees and spray it 2-3 times.
Fourth, the trunk is painted white. In winter and spring, the fruit tree is painted white with self-contained whitening agent, which can effectively reduce the absorption of solar heat, delay germination and flowering, and prevent cold, freeze, and prevent spawning pests from spawning. The preparation method of whitening agent is: take 5 kg of lime, 0.5 kg of sulfur powder, 1.5 kg of salt, 0.1 kg of vegetable oil, 0.5 kg of flour, and 15 kg of water. In the preparation process, lime and salt are separately heated with hot water, stirred into a paste, then sulfur powder, vegetable oil and flour are added, and finally the water can be used after adding water.
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